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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 120 | giacomo | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* Advanced Timer |
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| 23 | * Date: 8.4.2003 |
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| 24 | * Author: Giacomo Guidi <giacomo@gandalf.sssup.it> |
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| 25 | * |
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| 26 | */ |
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| 27 | |||
| 28 | #ifndef __ADVTIMER_H__ |
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| 29 | #define __ADVTIMER_H__ |
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| 30 | |||
| 31 | #include <ll/i386/defs.h> |
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| 32 | BEGIN_DEF |
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| 33 | |||
| 34 | /* TSC */ |
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| 35 | |||
| 36 | #define rdtsc(low,high) \ |
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| 37 | __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) |
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| 38 | |||
| 39 | #define rdtscll(val) \ |
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| 40 | __asm__ __volatile__("rdtsc" : "=A" (val)) |
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| 41 | |||
| 42 | /* RTC */ |
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| 43 | |||
| 44 | #define RTC_PORT(x) (0x70 + (x)) |
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| 45 | |||
| 46 | #define CMOS_READ(addr,val) \ |
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| 47 | { \ |
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| 48 | outp(RTC_PORT(0),(addr)); \ |
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| 49 | val = inp(RTC_PORT(1)); \ |
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| 50 | } |
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| 51 | |||
| 52 | #define CMOS_WRITE(addr,val) \ |
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| 53 | { \ |
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| 54 | outp(RTC_PORT(0),(addr)); \ |
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| 55 | outp(RTC_PORT(1),(val)); \ |
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| 56 | } |
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| 57 | |||
| 58 | #define RTC_IRQ 8 |
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| 59 | |||
| 131 | giacomo | 60 | extern signed long long clk_per_msec; |
| 61 | |||
| 62 | extern __inline__ void UNSIGNED_TSC2NSEC(unsigned long long tsc, unsigned long long *n) |
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| 63 | { |
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| 64 | |||
| 65 | unsigned long nl,nh; |
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| 66 | |||
| 67 | nl = *n & 0xFFFFFFFF; |
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| 68 | nh = *n >> 32; |
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| 69 | |||
| 70 | __asm__("mull %%ecx\n\t" |
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| 71 | "movl %%eax,%%esi\n\t" |
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| 72 | "movl %%edx,%%edi\n\t" |
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| 73 | "xorl %%edx,%%edx\n\t" |
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| 74 | "movl %6,%%eax\n\t" |
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| 75 | "mull %%ecx\n\t" |
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| 76 | "addl %%edi,%%eax\n\t" |
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| 77 | "adcl $0,%%edx\n\t" |
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| 78 | "movl %5,%%ecx\n\t" |
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| 79 | "divl %%ecx\n\t" |
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| 80 | "xchgl %%eax,%%esi\n\t" |
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| 81 | "divl %%ecx\n\t" |
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| 82 | : "=a" (nl), "=S" (nh) |
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| 83 | : "c" (1000000), "a" ((unsigned long)(tsc & 0xFFFFFFFF)), "d" (0), |
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| 84 | "m" ((unsigned long)(clk_per_msec)), "m" ((unsigned long)(tsc >> 32)), |
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| 85 | "S" (0), "D" (0)); |
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| 86 | |||
| 87 | *n = nh; |
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| 88 | *n <<= 32; |
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| 89 | *n |= nl; |
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| 90 | |||
| 91 | } |
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| 92 | |||
| 93 | void ll_init_advtimer(void); |
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| 94 | void ll_restore_CMOS(void); |
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| 95 | |||
| 120 | giacomo | 96 | END_DEF |
| 97 | #endif |